ML18047A485

Proposed Tech Specs Requiring Check Valve Closure Following Use of Low Pressure Safety Injection Sys for Shutdown Cooling

ML18047A485
Person / Time
Site:	Palisades
Issue date:	07/29/1982
From:	CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
Shared Package
ML18047A483	List: ML18047A482 ML18047A484 ML18047A485
References
TASK-05-11.A, TASK-5-11.A, TASK-RR NUDOCS 8208020310
Download: ML18047A485 (3)

Text

OI. .-. *

• CONSUMERS POWER COMPANY PROPOSED TECHNICAL SPECIFICATION CHANGE REQUEST PALISADES PLANT 8208020310 820729 1I PDR ADOCK 05000255  !

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compliance with Specification 3.3.b., the integrity of the re-maining check valve in each high pressure line having a leaking valve shall be determined and recorded daily and the position of the other closed valve located in that pressure line shall be recorded daily.

4.3.j. Following each use of the LPSI system for shutdown cooling, the reactor shall not be made critical until the LPSI check valves (CK-3103, CK-3118, CK-3133 and CK-3148) have been verified closed.

Basis The inspection program specified places major emphasis on the areas of highest stress concentration as determined by general design evaluation and experience with similar systems. (l) In addition, that portion of the reactor vessel shell welds which will be subjected to a fast neutron dose sufficient to change ductility properties will be inspected. The inspections will rely primarily on ultrasonic methods*

utilizing-up-to-date analyzing equipment and trained personnel. Pre-operational inspections will establi~h base conditions .by determining indications that might occur from geometrical or metallurgical sources and from discontinuities in weldments or plates which might cause undue concern on a postservice inspection. To the extent applicable, based upon the existing design and construction of the plant, the requirements of Section XI of the Code shall be complied with.

Significant exceptions are detailed in the requests for relief which have received NRC approval and are contained in the Class 1, Class 2 and Class 3 Long-Term Inspection Plans.

4-17.a Proposed

Reactor Vessel Surveillance Specimens Table 4.3.3 is consistent with the surveillance program as presented in 2

the FSAR. ( ) However, the withdrawal schedule has been modified to reflect the slightly different wall fluence* values resulting from removal of the thermal shield.

Valve Testing To ensure the continued integrity of selected check valves which are relied upon to preclude a potential LOCA outside containment, special requirements for periodic leak tests are specified. In addition a valve disk position check for the LPSI check valves is specified following each use of the LPSI system for shutdown cooling. This position check ensures that the four LPSI check valves.have reclosed upon cessation of shutdown cooling flow.

References (1) FSAR,. Section 4.5.6 (2) FSAR, Section 4.5.3 (3) Systematic Evaluation Program Topic V-11.A 4-17b. Proposed